CN102123877A - Hybrid cords for tire reinforcement - Google Patents
Hybrid cords for tire reinforcement Download PDFInfo
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- CN102123877A CN102123877A CN200880119434.6A CN200880119434A CN102123877A CN 102123877 A CN102123877 A CN 102123877A CN 200880119434 A CN200880119434 A CN 200880119434A CN 102123877 A CN102123877 A CN 102123877A
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- Prior art keywords
- core
- crust
- cord
- para
- aramid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0042—Reinforcements made of synthetic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/005—Reinforcements made of different materials, e.g. hybrid or composite cords
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/44—Yarns or threads characterised by the purpose for which they are designed
- D02G3/48—Tyre cords
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- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/062—Reinforcing cords for rubber or plastic articles the reinforcing cords being characterised by the strand configuration
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
- D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides
- D10B2331/021—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides aromatic polyamides, e.g. aramides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Ropes Or Cables (AREA)
- Tires In General (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
The invention provides a cord (10) for reinforcing tires, comprising a core (2) of at least one p-aramid filament that has a modulus greater than about 6.5 N/dTex and a sheath of steel strands (4) that are helically wound around the p-aramid filament.
Description
Background of invention
1. invention field
The present invention relates to be used for the mixing cord field that tire is reinforced, relate to the mixing cord that comprises steel wire and para-aramid long filament specifically.
2. association area is described
Preparation is used for the cord that mixes that comprises the steel strand of reeling with the para-aramid strand of fortified tire to be understood by people, and two kinds of strands all have steel core and para-aramid core.
US 5,551, and 498 have described core with two sth. made by twisting para-aramid strand together and six roots of sensation steel strand or the skin of long filament or the mixing cord of crust that centers on described core.Also described the mixing cord of being made up of core and layer, described core is made up of three steel strands, and described layer is made up of four para-aramid strands around described core.
US 4,176, and 705 have described the wire rod that is used for tire reinforces cord.Cord is made up of the para-aramid core, and is arranged on around the core by the steel strand that the steel long filament of twisting with the fingers together constitutes.
Known steel wire has lower breaking elongation than aromatic polyamide (aromatic poly amide) long filament.Therefore, prior art composite consolidation cord can only be exposed to the load that the wherein elongation of cord can not surpass the breaking elongation of steel wire strand.If exceed this ultimate load, then steel wire can break and all load occupied by the aromatic poly amide core, described core exceeds the breaking elongation of himself then immediately and also will break.In other words, known composite core can rupture when the breaking extension of corresponding its steel wire assembly of elongation, although in fact the latter is starkly lower than the breaking extension of polyamide core.
This type of too early steel wire fracture is described in US 4,807, in 680, this patent disclosure comprise the tire that mixes cord, described mixing cord is made up of the core of many para-aramid long filaments, described core is surrounded by the steel long filament of reeling around core.Solution of the present invention is to use the almost wire rod of rectangular cross section, and it has higher breaking elongation than cooresponding regular circular cross section wire rod.Utilize the mixing cord of rectangular cross section wire rod also to be described among the patent US 4,878,343.
Still there is demand to the mixing cord that makes full use of the para-aramid component.
The accompanying drawing summary
Fig. 1 has described the cross-sectional plane of the mixing cord in one embodiment of the invention.
Fig. 2 shows for the tensile strength data as the embodiment 2 of an embodiment of mixing cord of the present invention.
Fig. 3 shows the mechanical behavior with the conventional cord of standard para-aramid core preparation.
Detailed Description Of The Invention
Definition
As used herein, " strand " is meant the continuous band of aromatic poly amide or steel, and described band can comprise one filament or twist with the fingers together to form the plurality of threads of yarn (aromatic poly amide) or cable (steel).
As used herein, " long filament " be meant pliable and tough relatively, on having on the cross-sectional plane perpendicular to its length than the macroscopic view of aspect ratio main body uniformly.Filament cross can be Any shape, but is generally circular.Herein, the term " fiber " at aromatic poly amide exchanges use with term " long filament ".Term " wire rod " at steel also can exchange use with term " long filament ".
As used herein, " wire rod " is meant the continuous steel main body that has bigger aspect ratio on the cross-sectional plane perpendicular to its length.
As used herein, " yarn " is meant the strand that comprises sth. made by twisting plurality of threads together.
As used herein, " cable " is meant the strand that comprises sth. made by twisting many wire rods together.
About " diameter " of long filament, strand, yarn or cable be can be drawn with the minimum circle diameter of the entire cross section of restriction long filament, strand, yarn or cable.
" danier " is per 9, and the unit of the long filament of 000m length, strand, yarn or cable is the weight of gram.
" Tekes " is the weight of the unit of a km long filament, strand, yarn or cable for gram.
" dtex " is 1/10th Tekes, is abbreviated as dTex.
" helical angle " is meant the angle that the major axis by crust strand path and core forms.The statement helical angle is of equal value to be used.
" lay pitch " is meant the length that the crust around the corresponding core of measuring is turned on the crust axis.
Find, when utilizing the high-modulus para-aramid core preparation that centers on by the steel strand to mix cord, can utilize para-aramid intensity best and prepare disruptive load value wherein and mix cord near what para-aramid added separately and was worth with steel.In the first embodiment, the invention provides the mixing cord that is used for fortified tire, described mixing cord comprises: the core of at least one para-aramid long filament; And be wound in a spiral in steel strand crust around the para-aramid long filament; Wherein said para-aramid long filament has greater than about 6.5 and the modulus of about at the most 10.8 newton/dtex.
In second embodiment, the invention provides the tire ruggedized construction that comprises mixing cord of the present invention.
In the 3rd embodiment, the invention provides the tire that comprises mixing cord of the present invention.
In one aspect, the invention provides and be used to make the method for mixing cord, said method comprising the steps of: the core of at least one para-aramid long filament is provided and wraps up described core so that form crust with many steel strands, described long filament has the modulus greater than about 6.5 newton/dtex.
On the other hand, the invention provides the method that is used to make tire ruggedized construction, described method comprises mixing cord of the present invention is attached to step in the matrix.
Aspect another, the invention provides the method that is used to make fortified tire, described method comprises mixing cord of the present invention is attached to step in the tire.
Core
In one embodiment, mixing cord of the present invention has the core that comprises at least one continuous high-modulus para-aramid long filament, wherein said modulus usually between 6.5 and 10.8 newton/dtex between; For example 7 or bigger, for example 7 to 10.8 newton/dtex; Perhaps be 6.5 to 8 newton/dtex in addition.The high-modulus para-aramid can be realized described in for example US 3869,430: fibre spinning is by hot cell, stretching device and reduce spinning speed to increase crystallinity and required crystal orientation is provided.
By using the high-modulus para-aramid, the breaking elongation of core and crust long filament almost mates, so that under disruptive load (being destructive extension test), core and crust long filament are tending towards (perhaps saying more simply simultaneously) fracture under essentially identical percentage elongation.One or more yarn can be used for core.
Core can have circle or oval cross section before being wound with the crust long filament, yet it also can have more complicated shape, for example leafy shape or star.In case core is wound with the crust long filament, it will be by crust long filament " extruding ", and will present more complicated shape of cross section usually, for example " star " among Fig. 1.
Core can be made up of single para-aramid long filament, and perhaps it can be by forming by the yarn of many para-aramid long filaments being twisted with the fingers preparation together.Core also might be twisted with the fingers the para-aramid long filament composition that together (that is, freely concern) by two or more, perhaps its can by two or more or sth. made by twisting together or freely aramid yarn form.
The yarn of any basically diameter or linear density can be used for core.With regard to the homogenization yarn, linear density is directly related with diameter, and therefore two kinds of expression are used interchangeably.The linear density of selected core strand depends on the final diameter of required mixing cord.The yarn example that can be used as the core strand is for having about 1000 to 5000 dtexs, or the para-aramid yarn of the linear density in about 1500 to 4000 dtex scopes.Yarn with commercially available acquisition of the linear density in about 1600 to 3200 dtex scopes is fit to.
Heart yarn can be made up of with the para-aramid long filament of the yarn that forms required dtex many sth. made by twisting together.For example, in general yarn, there are about 1000 threads with about 1580 dtex linear densities.In general yarn, there are about 1333 to 2000 threads with about 3160 dtex linear densities.
Crust
Every crust strand can be made up of or it can form with many continuous wires that form cable by twisting with the fingers together continuous individual wire.Wire rod has ellipse or circular cross section.Wire rod is coated with the coating of giving rubber affinity usually, especially the coating that can react with the sulphur atom in the rubber, for example copper, zinc and this type of metallo-alloy, for example brass.
The diameter of crust strand will influence the final structure of mixing cord.The general diameter that is used for the used steel wire of mixing cord of the present invention that tire reinforces in the scope of about 0.15mm to 0.25mm, 0.175mm for example.So-called " thin steel " also is preferred, and it has the diameter in about 0.04mm to 0.125mm scope.Cord with thin steel crust preparation is particularly suited for passenger tyre band or motor cycle tire band.If finer wire as crust, then preferably utilizes the core of about 1600 dtexs.Be used for crust if will have the wire rod of about 0.15mm or larger diameter, then core should be preferably with one or two para-aramid yarn preparations, and wherein every one thread is about 3200 dtexs.
Mix cord
In the embodiment that provides according to mixing cord of the present invention, following parameter is considered:
The number of crust strand, N;
The diameter of crust strand, d;
The diameter of one or more core strand or linear density;
Packing ratio;
The helixangle or the lay pitch.These two parameters are not independent, because the lay pitch equals п * d
c/ tan θ, wherein d
cBe circle diameter through crust strand center.
Packing ratio is defined as the ratio of the usable area of the actual cross-sectional area of core and core.In mixing cord of the present invention, expectation has about 0.85 to 1.15, but preferred about 1 packing ratio.
With regard to being no more than 20 ° helical angle, can be used for the roughly gross area (A of core
Core) provide by formula (1) experience:
A
Core=[d/ (2cos θ)]
2* { [п-N (β-sin β cos β)] * (1/tan β)
2(1)
-Ncosθ×(п/2-β-sinβcosβ)}
Wherein d is the diameter of crust strand, and θ is a helical angle, and N is the number of crust strand, and β=п/N.The strand diameter d is expressed as mm, and β is expressed as radian, so that gained A
CoreValue unit is mm
2
Packing ratio can be by using actual core cross-sectional plane divided by the A that calculates
CoreValue is calculated.Actual core cross-sectional plane can be measured by optics or electron microscope method, perhaps can be calculated as alternatively:
A
Actual[mm
2]=linear density [dtex]/(10000* fiber proportion * core fill factor)
Wherein, in the situation of para-aramid yarn with the circular cross section fiber production, fiber proportion equal 1.44 and the core fill factor find to equal 0.74768 with experimental technique.The core fill factor is the mark of effective yarn cross section of being occupied by aramid fibre on total yarn cross section, and described total yarn cross section also comprises the little space that is present between the tightly packed fiber.
Outer micromicro is made up of to two steel strands few, still also can have the steel strand that is less than 20.
The diameter of steel strand is applied as about 0.08 to 0.25mm or about 0.08 to 0.125mm for passenger tyre or motor cycle tire band, and is about 0.15 to 0.2mm for truck tyre band and carcass applications.
(for example US 4 having low modulus para-aramid core and steel-wire sheath, 176, described in 705) routine mix in the cord, the disruptive load that might mate crust and core in theory, but can only be by utilizing high helical angle (promptly greater than 30 °) so that manually increase the breaking elongation of steel crust.Yet this type of high helical angle in fact can not obtain by industrial available steel cable stranding equipment.According to the present invention, might when utilizing rational helical angle (that is, in about 8 to 21 ° scope), obtain the matched well of the disruptive load of core and crust.In addition, mixing cord of the present invention can have the helical angle in about 10 to 15 ° of scopes.
Some embodiments of mixing cord of the present invention are described below.These cords all have 1.0 packing ratio:
Core 1
Core: the para-aramid yarn, make 1580 dtexs, 1000 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex
Crust: 15 steel wires with 0.1mm diameter
Helical angle: 18.6 °
The lay pitch: 4.74mm
Expection pulling strengrth: 609 newton
Core: the para-aramid yarn, make 1580 dtexs, 1000 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex
Crust: 18 steel wires with 0.08mm diameter
Helical angle: 20.2 °
The lay pitch: 4.19mm
Expection pulling strengrth: 535 newton
Core: the para-aramid yarn, make 1580 dtexs, 1000 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex
Crust: 17 steel wires with 0.09mm diameter
Helical angle: 12.9 °
The lay pitch: 6.92mm
Expection pulling strengrth: 596 newton
Core 4
Core: the para-aramid yarn, make 1580 dtexs, 1000 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex
Crust: 13 steel wires with 0.125mm diameter
Helical angle: 10.9 °
The lay pitch: 8.97mm
Expection pulling strengrth: 740 newton
Core: the para-aramid yarn, by have greater than for or the para-aramid that is about the modulus of 6.5 newton/dtex make 3173 dtexs, 1333 to 2000 threads
Crust: 13 steel wires with 0.175mm diameter
Helical angle: 13.0 °
The lay pitch: 10.2mm
Expection pulling strengrth: 1454 newton
Core 6
Core: the para-aramid yarn, by have greater than for or the para-aramid that is about the modulus of 6.5 newton/dtex make 3276 dtexs, 1333 to 2000 threads
Crust: 15 steel wires with 0.15mm diameter
Helical angle: 12.8 °
The lay pitch: 10.2mm
Expection pulling strengrth: 1347 newton
Core 7
Core: the yarn of two sth. made by twisting para-aramid 3155 dtexs together, to make by the para-aramid that has greater than the modulus of about 6.5 newton/dtex, every one thread has 1333 to 2000 threads
Crust: 17 steel wires with 0.175mm diameter
Helical angle: 17.0 °
The lay pitch: 10.2mm
Expection pulling strengrth: 2288 newton
In above-mentioned cord, suppose that core is fully utilized with the pulling strengrth of crust and these two assemblies rupture but the steel crust is in the elasticity flow regimes of elastic-plastic model calculates " expection pulling strengrth ".
In their crust, utilize the cord 5,6 and 7 of conventional mesh wire diameter to be particularly useful for truck tyre band and carcass.
Tire ruggedized construction and tire
Mixing cord of the present invention is particularly useful for reinforcing the band in passenger tyre, truck tyre and carcass and the High Performance motor cycle tire.Reinforce cord with clean steel and compare, utilize para-aramid to reduce tire weight and improved rolling resistance as the core material in the cord of the present invention.In addition, it has also reduced corrosion, because para-aramid is not perishable.
For mixing cord of the present invention is attached in the tire, cord is attached in the matrix to form the tire ruggedized construction of carcass, flange reinforced bead (being used for the composite material bar that low sidewall reinforces) or strips.Matrix can be and can partly or wholly be embedded in the cord of the present invention and keep many cords any polymeric material of fixed orientation and placement relative to each other.General material is a for example rubber of thermoset material, yet also may use thermoplastic material, for example Thermoplastic Vulcanizate and copolyether ester.Subsequently tire ruggedized construction is fitted in the tire construction that is usually located under the tyre surface.With regard to band ruggedized construction, band is along tire circumference, walk under tyre surface or along the wheel rim of tire.
Prepare the method for mixing cord
In order to prepare mixing cord of the present invention, with the steel strand stranding of selected number or be wound in a spiral in high-modulus para-aramid core around.The steel strand can be formed by requisite number purpose steel long filament or wire rod separately, and they are twisted with the fingers together to form cable.The standard cable-former that is used for Wire Rope Production can be used for preparation and mixes cord.
Wish the space of aromatic poly amide core complete filling by the center arrangement of the steel strand generation of stranding or screw winding.Packing ratio can be about 0.85 to 1.15 or about 0.95 to 1.05.
If packing ratio is low excessively, then is difficult to obtain the mixing cord geometric configuration of rule, and can have mechanical couplings between core and the crust.This means core intracutaneous portion slip outside, thereby weakened cord strength.
On the other hand, if packing ratio is too high, the gap between the then contiguous crust wire rod will be excessive and mix the outside face of cord can not be basically 100% be metal because the aromatic poly amide core will be exposed.Coupling agent reaction in copper plated steel and the rubber causes the adhesion of rubber matrix to the steel crust.For untreated aromatic poly amide same adhesion can not take place.This means that if the aromatic poly amide core is exposed, then rubber matrix is weakened the adhesion meeting of cord.
The crust strand can cover at least 85% of core, or core at least 90%, perhaps core in addition at least 95%.When having 1.15 packing ratio, the steel crust will cover 93.25% of wicking surface.
When mixing cord 10 had 1 packing ratio, the geometric configuration of cross-sectional plane was " rule " (referring to Fig. 1), that is, core 2 is complete filling crust wire rod 4 in-to-in star gaps basically.As shown in Figure 1, the cross-sectional plane that mixes cord 10 has 8 spirals and is wrapped in aromatic poly amide core 2 wire rod 4 on every side, and wherein its cross-section center that is arranged so that of every crust wire rod 4 is positioned on the summit of regular equilateral polygon.The aromatic poly amide core is shown as by the crust long filament and is squeezed into complicated shape (being star in this description).
Embodiment
Prepare following mixing cord and make it stand the gross load that ruptures according to ASTM D-2969:
Embodiment 1
Core: yarn, make 3160 dtexs, 1333 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex.
Crust: 13 steel wires with 0.175mm diameter
Helical angle: 13.0 °
The lay pitch: 10.2mm
The actual embodiment of the core of mentioning in this embodiment core representative general introduction 5.3160 dtex yarns of commercially available acquisition are as core.Packing ratio is 0.9969.If crust and core are used by the best, then Yu Qi fracture gross load (as calculate) be 1452 newton.
Core: yarn, make 3160 dtexs, 1333 ± 2% threads by the para-aramid that has greater than the modulus of about 6.5 newton/dtex.
Crust: 15 steel wires with 0.15mm diameter
Helical angle: 12.8 °
The lay pitch: 10.2mm
The actual embodiment of the core of mentioning in this embodiment core representative general introduction 6.3160 dtex yarns of commercially available acquisition are as core.Packing ratio is 0.9646.If crust and core are used by the best, then Yu Qi fracture gross load (as calculate) be 1324 newton.
Core: the yarn of two sth. made by twisting, 3160 dtexs together, to make by the para-aramid that has greater than the modulus of about 6.5 newton/dtex, every one thread has 1333 ± 2% threads.
Crust: 17 steel wires with 0.175mm diameter
Helical angle: 17.0 °
The lay pitch: 10.2mm
The actual embodiment of the core of mentioning in this embodiment core representative general introduction 7.3160 dtex yarns of commercially available acquisition are as core.Packing ratio is 1.0016.If crust and core are used by the best, then Yu Qi fracture gross load (as calculate) be 2290 newton.
Actual crack load according to cord in ASTM D-2969 test implementation example 1,2 and 3.Measured value is listed in the table 1 together with the theoretical value that adds and calculate based on the theoretical limit load of core and crust.
With regard to core, the following calculating of computing value:
The ultimate load of core [newton]=yarn toughness [newton/dtex] * linear density [dtex]
The ultimate load of crust is calculated as:
The ultimate load of crust=crust wire rod number * wire rod disruptive load *
The fracture draw ratio, the draw ratio that wherein ruptures is estimated as the function of helixangle: fracture draw ratio=(cos θ)
1.5
Diameter is d[mm] the disruptive load of wire rod can experimental technique determine or be estimated as:
Wire rod disruptive load [newton]=tensile strength of steel [N/mm
2] * 1/4* п * (d[mm])
2
The value that is used for theoretical strength calculating is:
-high-modulus para-aramid toughness 0.193 newton/dtex-tensile strength of steel 2800N/mm
2
The ideal behavior of core of the present invention is found among Fig. 2, and it illustrates for the pulling strengrth of embodiment 2 (the x axle: percentage elongation, unit are %, the y axle: power, unit is newton).Fracture when smooth curve shows required core and crust.
On the other hand, Fig. 3 shows the behavior with the conventional cord of standard low modulus para-aramid preparation.Be strain on the x axle, unit is %; Be load on the y axle, unit is newton.Core is the structure of the 3333 dtex standard para-aramid cores that comprise that the wire rod by 12 0.2mm diameters centers on.Curve C illustrates the gross load on the sample.Curve B is the heart yarn stress strain curve figure of (that is, not containing crust), and curve A is the difference between curve C and the curve B, the contribution of corresponding steel crust.Be apparent that the fracture already before para-aramid core full and down of steel crust wire rod.The calculated strength of structure is 1592 newton, and experiment value is 1298 newton (81.54%).The para-aramid core only is 318 newton to the contribution of intensity, only 51.88% of corresponding pure core intensity.Therefore, when the standard of use para-aramid core, the degree of utilization of para-aramid core intensity is about 50%.By contrast, in mixing cord of the present invention, when using the high-modulus para-aramid, almost 100% core intensity is utilized.
Claims (14)
1. be used for the mixing cord of fortified tire, described cord comprises:
The core of at least one para-aramid long filament and
Be wound in a spiral in described para-aramid long filament steel strand crust on every side;
Wherein said para-aramid long filament has the modulus greater than 6.5 newton/dtex.
2. the mixing cord of claim 1, each is made up of wherein said steel strand individual wire.
3. the mixing cord of claim 1, each is made up of wherein said steel strand cable, and described cable is twisted with the fingers together by many steel wires and is prepared.
4. the mixing cord of claim 1, being covered by described crust of the outside face of wherein said core greater than 90%.
5. the mixing cord of claim 1, wherein said helical angle is between 8 and 21 °.
6. the mixing cord of claim 1, wherein said crust is made by the finer wire of diameter between 0.04mm and 0.125mm.
7. the supporting construction that is used for tire, described supporting construction comprise one or more mixing cord and support substrate according to claim 1.
8. the supporting construction of claim 7, described supporting construction is a band.
9. the supporting construction of claim 7, described supporting construction is a carcass.
10. the supporting construction of claim 7, described supporting construction is the flange reinforced bead.
11. comprise one or more tire according to the mixing cord of claim 1.
12. be used to make the method for mixing cord, said method comprising the steps of:
The core of at least one para-aramid long filament is provided, and described long filament has the modulus greater than 6.5 newton/dtex, and
Wrap up described core with many steel strands, so that form the crust of steel strand.
13. make the method for the supporting construction be used for tire, described method comprises that the mixing cord with claim 1 is embedded into the step in the support substrate.
14. make the method for tire, described method comprises the supporting construction according to claim 7 is attached to step in the tire.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US531007P | 2007-12-04 | 2007-12-04 | |
| US61/005310 | 2007-12-04 | ||
| PCT/US2008/085481 WO2009073761A1 (en) | 2007-12-04 | 2008-12-04 | Hybrid cords for tire reinforcement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102123877A true CN102123877A (en) | 2011-07-13 |
| CN102123877B CN102123877B (en) | 2015-11-25 |
Family
ID=40263359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880119434.6A Expired - Fee Related CN102123877B (en) | 2007-12-04 | 2008-12-04 | For the mixing cord of tire reinforcement |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US8079208B2 (en) |
| EP (1) | EP2219884B1 (en) |
| JP (1) | JP5394388B2 (en) |
| CN (1) | CN102123877B (en) |
| AT (1) | ATE508889T1 (en) |
| WO (1) | WO2009073761A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948058A (en) * | 2017-04-01 | 2017-07-14 | 东台磊达钢帘线有限公司 | Steel wire aramid fiber composite cord |
| CN114901879A (en) * | 2020-01-07 | 2022-08-12 | Ngf欧洲公司 | Winding cord for reinforcing rubber products |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100267361A1 (en) * | 2009-03-20 | 2010-10-21 | Guardianlion Wireless, LLC | Monitoring device and system |
| US9387727B2 (en) | 2009-07-27 | 2016-07-12 | Nv Bekaert Sa | Hybrid steel-textile reinforcement ply for radial tires |
| US20120152428A1 (en) * | 2009-08-20 | 2012-06-21 | Bridgestone Corporation | Tire and tire manufacturing method |
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- 2008-12-04 AT AT08858073T patent/ATE508889T1/en not_active IP Right Cessation
- 2008-12-04 WO PCT/US2008/085481 patent/WO2009073761A1/en active Application Filing
- 2008-12-04 CN CN200880119434.6A patent/CN102123877B/en not_active Expired - Fee Related
- 2008-12-04 JP JP2010537042A patent/JP5394388B2/en not_active Expired - Fee Related
- 2008-12-04 EP EP08858073A patent/EP2219884B1/en not_active Not-in-force
- 2008-12-04 US US12/327,952 patent/US8079208B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106948058A (en) * | 2017-04-01 | 2017-07-14 | 东台磊达钢帘线有限公司 | Steel wire aramid fiber composite cord |
| CN114901879A (en) * | 2020-01-07 | 2022-08-12 | Ngf欧洲公司 | Winding cord for reinforcing rubber products |
| CN114901879B (en) * | 2020-01-07 | 2024-05-03 | Ngf欧洲公司 | Wound cord for reinforcing rubber products |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090159171A1 (en) | 2009-06-25 |
| US8079208B2 (en) | 2011-12-20 |
| ATE508889T1 (en) | 2011-05-15 |
| WO2009073761A1 (en) | 2009-06-11 |
| JP5394388B2 (en) | 2014-01-22 |
| CN102123877B (en) | 2015-11-25 |
| EP2219884A1 (en) | 2010-08-25 |
| EP2219884B1 (en) | 2011-05-11 |
| JP2011505506A (en) | 2011-02-24 |
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